Feature :USB lithium battery recharge, with screen and buttonCan set up hours or minutes, longest seting time is 99 hours with 59 minutesCan't be opened before the time outBear the pull 130kg from horizontal or vertical, 3 grades resistance fallingUse 4 hours everyday, the durability is 30 days after once chargeableAfter 1200 times charging and discharging, battery capacity decline 15%,After 3000 times, the durability become 3.5 hours after each charging

Function :1. Great locker for locking handcuffs, mouth gags or chastity pants in adult games.2. Lock male cock cage to prevent masturbation.3. Lock important articles to keep privacy or when you are not at home